623 lines
18 KiB
C
623 lines
18 KiB
C
/* grub-mkimage.c - make a bootable image */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2002,2003,2004,2005,2006,2007,2008,2009,2010 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <grub/types.h>
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#include <grub/machine/boot.h>
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#include <grub/machine/kernel.h>
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#include <grub/machine/memory.h>
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#include <grub/elf.h>
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#include <grub/i18n.h>
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#include <grub/kernel.h>
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#include <grub/disk.h>
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#include <grub/util/misc.h>
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#include <grub/util/resolve.h>
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#include <grub/misc.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdlib.h>
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#include <assert.h>
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#define _GNU_SOURCE 1
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#include <getopt.h>
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#include "progname.h"
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#define ALIGN_ADDR(x) (ALIGN_UP((x), GRUB_TARGET_SIZEOF_VOID_P))
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#ifdef ENABLE_LZMA
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#include <grub/lib/LzmaEnc.h>
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static void *SzAlloc(void *p, size_t size) { p = p; return xmalloc(size); }
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static void SzFree(void *p, void *address) { p = p; free(address); }
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static ISzAlloc g_Alloc = { SzAlloc, SzFree };
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static void
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compress_kernel (char *kernel_img, size_t kernel_size,
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char **core_img, size_t *core_size)
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{
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CLzmaEncProps props;
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unsigned char out_props[5];
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size_t out_props_size = 5;
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LzmaEncProps_Init(&props);
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props.dictSize = 1 << 16;
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props.lc = 3;
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props.lp = 0;
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props.pb = 2;
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props.numThreads = 1;
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if (kernel_size < GRUB_KERNEL_MACHINE_RAW_SIZE)
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grub_util_error (_("the core image is too small"));
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*core_img = xmalloc (kernel_size);
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memcpy (*core_img, kernel_img, GRUB_KERNEL_MACHINE_RAW_SIZE);
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*core_size = kernel_size - GRUB_KERNEL_MACHINE_RAW_SIZE;
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if (LzmaEncode((unsigned char *) *core_img + GRUB_KERNEL_MACHINE_RAW_SIZE,
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core_size,
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(unsigned char *) kernel_img + GRUB_KERNEL_MACHINE_RAW_SIZE,
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kernel_size - GRUB_KERNEL_MACHINE_RAW_SIZE,
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&props, out_props, &out_props_size,
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0, NULL, &g_Alloc, &g_Alloc) != SZ_OK)
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grub_util_error (_("cannot compress the kernel image"));
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*core_size += GRUB_KERNEL_MACHINE_RAW_SIZE;
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}
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#else /* No lzma compression */
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static void
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compress_kernel (char *kernel_img, size_t kernel_size,
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char **core_img, size_t *core_size)
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{
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*core_img = xmalloc (kernel_size);
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memcpy (*core_img, kernel_img, kernel_size);
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*core_size = kernel_size;
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}
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#endif /* No lzma compression */
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static void
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generate_image (const char *dir, char *prefix, FILE *out, char *mods[],
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char *memdisk_path, char *font_path, char *config_path,
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#ifdef GRUB_PLATFORM_IMAGE_DEFAULT
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grub_platform_image_format_t format
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#else
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int dummy __attribute__ ((unused))
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#endif
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)
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{
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char *kernel_img, *core_img;
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size_t kernel_size, total_module_size, core_size;
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size_t memdisk_size = 0, font_size = 0, config_size = 0, config_size_pure = 0;
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char *kernel_path;
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size_t offset;
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struct grub_util_path_list *path_list, *p, *next;
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struct grub_module_info *modinfo;
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path_list = grub_util_resolve_dependencies (dir, "moddep.lst", mods);
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kernel_path = grub_util_get_path (dir, "kernel.img");
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kernel_size = grub_util_get_image_size (kernel_path);
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total_module_size = sizeof (struct grub_module_info);
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if (memdisk_path)
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{
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memdisk_size = ALIGN_UP(grub_util_get_image_size (memdisk_path), 512);
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grub_util_info ("the size of memory disk is 0x%x", memdisk_size);
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total_module_size += memdisk_size + sizeof (struct grub_module_header);
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}
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if (font_path)
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{
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font_size = ALIGN_ADDR (grub_util_get_image_size (font_path));
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total_module_size += font_size + sizeof (struct grub_module_header);
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}
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if (config_path)
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{
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config_size_pure = grub_util_get_image_size (config_path) + 1;
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config_size = ALIGN_ADDR (config_size_pure);
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grub_util_info ("the size of config file is 0x%x", config_size);
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total_module_size += config_size + sizeof (struct grub_module_header);
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}
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for (p = path_list; p; p = p->next)
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total_module_size += (ALIGN_ADDR (grub_util_get_image_size (p->name))
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+ sizeof (struct grub_module_header));
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grub_util_info ("the total module size is 0x%x", total_module_size);
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kernel_img = xmalloc (kernel_size + total_module_size);
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grub_util_load_image (kernel_path, kernel_img);
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if (GRUB_KERNEL_MACHINE_PREFIX + strlen (prefix) + 1 > GRUB_KERNEL_MACHINE_DATA_END)
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grub_util_error (_("prefix is too long"));
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strcpy (kernel_img + GRUB_KERNEL_MACHINE_PREFIX, prefix);
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/* Fill in the grub_module_info structure. */
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modinfo = (struct grub_module_info *) (kernel_img + kernel_size);
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memset (modinfo, 0, sizeof (struct grub_module_info));
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modinfo->magic = grub_host_to_target32 (GRUB_MODULE_MAGIC);
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modinfo->offset = grub_host_to_target_addr (sizeof (struct grub_module_info));
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modinfo->size = grub_host_to_target_addr (total_module_size);
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offset = kernel_size + sizeof (struct grub_module_info);
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for (p = path_list; p; p = p->next)
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{
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struct grub_module_header *header;
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size_t mod_size, orig_size;
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orig_size = grub_util_get_image_size (p->name);
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mod_size = ALIGN_ADDR (orig_size);
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header = (struct grub_module_header *) (kernel_img + offset);
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memset (header, 0, sizeof (struct grub_module_header));
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header->type = grub_host_to_target32 (OBJ_TYPE_ELF);
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header->size = grub_host_to_target32 (mod_size + sizeof (*header));
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offset += sizeof (*header);
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memset (kernel_img + offset + orig_size, 0, mod_size - orig_size);
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grub_util_load_image (p->name, kernel_img + offset);
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offset += mod_size;
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}
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if (memdisk_path)
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{
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struct grub_module_header *header;
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header = (struct grub_module_header *) (kernel_img + offset);
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memset (header, 0, sizeof (struct grub_module_header));
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header->type = grub_host_to_target32 (OBJ_TYPE_MEMDISK);
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header->size = grub_host_to_target32 (memdisk_size + sizeof (*header));
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offset += sizeof (*header);
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grub_util_load_image (memdisk_path, kernel_img + offset);
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offset += memdisk_size;
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}
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if (font_path)
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{
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struct grub_module_header *header;
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header = (struct grub_module_header *) (kernel_img + offset);
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memset (header, 0, sizeof (struct grub_module_header));
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header->type = grub_host_to_target32 (OBJ_TYPE_FONT);
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header->size = grub_host_to_target32 (font_size + sizeof (*header));
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offset += sizeof (*header);
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grub_util_load_image (font_path, kernel_img + offset);
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offset += font_size;
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}
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if (config_path)
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{
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struct grub_module_header *header;
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header = (struct grub_module_header *) (kernel_img + offset);
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memset (header, 0, sizeof (struct grub_module_header));
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header->type = grub_host_to_target32 (OBJ_TYPE_CONFIG);
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header->size = grub_host_to_target32 (config_size + sizeof (*header));
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offset += sizeof (*header);
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grub_util_load_image (config_path, kernel_img + offset);
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*(kernel_img + offset + config_size_pure - 1) = 0;
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offset += config_size;
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}
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grub_util_info ("kernel_img=%p, kernel_size=0x%x", kernel_img, kernel_size);
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compress_kernel (kernel_img, kernel_size + total_module_size,
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&core_img, &core_size);
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grub_util_info ("the core size is 0x%x", core_size);
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#if defined(GRUB_MACHINE_PCBIOS)
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{
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unsigned num;
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char *boot_path, *boot_img;
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size_t boot_size;
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num = ((core_size + GRUB_DISK_SECTOR_SIZE - 1) >> GRUB_DISK_SECTOR_BITS);
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if (num > 0xffff)
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grub_util_error (_("the core image is too big"));
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boot_path = grub_util_get_path (dir, "diskboot.img");
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boot_size = grub_util_get_image_size (boot_path);
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if (boot_size != GRUB_DISK_SECTOR_SIZE)
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grub_util_error (_("diskboot.img size must be %u bytes"),
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GRUB_DISK_SECTOR_SIZE);
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boot_img = grub_util_read_image (boot_path);
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{
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struct grub_boot_blocklist *block;
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block = (struct grub_boot_blocklist *) (boot_img
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+ GRUB_DISK_SECTOR_SIZE
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- sizeof (*block));
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block->len = grub_host_to_target16 (num);
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/* This is filled elsewhere. Verify it just in case. */
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assert (block->segment
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== grub_host_to_target16 (GRUB_BOOT_MACHINE_KERNEL_SEG
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+ (GRUB_DISK_SECTOR_SIZE >> 4)));
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}
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grub_util_write_image (boot_img, boot_size, out);
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free (boot_img);
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free (boot_path);
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}
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#elif defined(GRUB_MACHINE_QEMU)
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{
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char *rom_img;
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size_t rom_size;
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char *boot_path, *boot_img;
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size_t boot_size;
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boot_path = grub_util_get_path (dir, "boot.img");
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boot_size = grub_util_get_image_size (boot_path);
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boot_img = grub_util_read_image (boot_path);
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/* Rom sizes must be 64k-aligned. */
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rom_size = ALIGN_UP (core_size + boot_size, 64 * 1024);
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rom_img = xmalloc (rom_size);
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memset (rom_img, 0, rom_size);
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*((grub_int32_t *) (core_img + GRUB_KERNEL_MACHINE_CORE_ENTRY_ADDR))
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= grub_host_to_target32 ((grub_uint32_t) -rom_size);
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memcpy (rom_img, core_img, core_size);
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*((grub_int32_t *) (boot_img + GRUB_BOOT_MACHINE_CORE_ENTRY_ADDR))
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= grub_host_to_target32 ((grub_uint32_t) -rom_size);
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memcpy (rom_img + rom_size - boot_size, boot_img, boot_size);
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free (core_img);
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core_img = rom_img;
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core_size = rom_size;
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free (boot_img);
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free (boot_path);
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}
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#endif
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#ifdef GRUB_KERNEL_MACHINE_TOTAL_MODULE_SIZE
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*((grub_uint32_t *) (core_img + GRUB_KERNEL_MACHINE_TOTAL_MODULE_SIZE))
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= grub_host_to_target32 (total_module_size);
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#endif
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*((grub_uint32_t *) (core_img + GRUB_KERNEL_MACHINE_KERNEL_IMAGE_SIZE))
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= grub_host_to_target32 (kernel_size);
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#ifdef GRUB_KERNEL_MACHINE_COMPRESSED_SIZE
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*((grub_uint32_t *) (core_img + GRUB_KERNEL_MACHINE_COMPRESSED_SIZE))
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= grub_host_to_target32 (core_size - GRUB_KERNEL_MACHINE_RAW_SIZE);
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#endif
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#if defined(GRUB_KERNEL_MACHINE_INSTALL_DOS_PART) && defined(GRUB_KERNEL_MACHINE_INSTALL_BSD_PART)
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/* If we included a drive in our prefix, let GRUB know it doesn't have to
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prepend the drive told by BIOS. */
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if (prefix[0] == '(')
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{
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*((grub_int32_t *) (core_img + GRUB_KERNEL_MACHINE_INSTALL_DOS_PART))
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= grub_host_to_target32 (-2);
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*((grub_int32_t *) (core_img + GRUB_KERNEL_MACHINE_INSTALL_BSD_PART))
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= grub_host_to_target32 (-2);
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}
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#endif
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#ifdef GRUB_MACHINE_PCBIOS
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if (GRUB_KERNEL_MACHINE_LINK_ADDR + core_size > GRUB_MEMORY_MACHINE_UPPER)
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grub_util_error (_("core image is too big (%p > %p)"),
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GRUB_KERNEL_MACHINE_LINK_ADDR + core_size,
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GRUB_MEMORY_MACHINE_UPPER);
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#endif
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#if defined(GRUB_MACHINE_MIPS)
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if (format == GRUB_PLATFORM_IMAGE_ELF)
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{
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char *elf_img;
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size_t program_size;
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Elf32_Ehdr *ehdr;
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Elf32_Phdr *phdr;
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grub_uint32_t target_addr;
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program_size = ALIGN_ADDR (core_size);
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elf_img = xmalloc (program_size + sizeof (*ehdr) + sizeof (*phdr));
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memset (elf_img, 0, program_size + sizeof (*ehdr) + sizeof (*phdr));
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memcpy (elf_img + sizeof (*ehdr) + sizeof (*phdr), core_img, core_size);
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ehdr = (void *) elf_img;
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phdr = (void *) (elf_img + sizeof (*ehdr));
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memcpy (ehdr->e_ident, ELFMAG, SELFMAG);
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ehdr->e_ident[EI_CLASS] = ELFCLASS32;
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#ifdef GRUB_CPU_MIPSEL
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ehdr->e_ident[EI_DATA] = ELFDATA2LSB;
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#else
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ehdr->e_ident[EI_DATA] = ELFDATA2MSB;
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#endif
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ehdr->e_ident[EI_VERSION] = EV_CURRENT;
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ehdr->e_ident[EI_OSABI] = ELFOSABI_NONE;
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ehdr->e_type = grub_host_to_target16 (ET_EXEC);
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ehdr->e_machine = grub_host_to_target16 (EM_MIPS);
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ehdr->e_version = grub_host_to_target32 (EV_CURRENT);
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ehdr->e_phoff = grub_host_to_target32 ((char *) phdr - (char *) ehdr);
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ehdr->e_phentsize = grub_host_to_target16 (sizeof (*phdr));
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ehdr->e_phnum = grub_host_to_target16 (1);
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/* No section headers. */
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ehdr->e_shoff = grub_host_to_target32 (0);
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ehdr->e_shentsize = grub_host_to_target16 (0);
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ehdr->e_shnum = grub_host_to_target16 (0);
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ehdr->e_shstrndx = grub_host_to_target16 (0);
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ehdr->e_ehsize = grub_host_to_target16 (sizeof (*ehdr));
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phdr->p_type = grub_host_to_target32 (PT_LOAD);
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phdr->p_offset = grub_host_to_target32 (sizeof (*ehdr) + sizeof (*phdr));
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phdr->p_flags = grub_host_to_target32 (PF_R | PF_W | PF_X);
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target_addr = ALIGN_UP (GRUB_KERNEL_MACHINE_LINK_ADDR
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+ kernel_size + total_module_size, 32);
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ehdr->e_entry = grub_host_to_target32 (target_addr);
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phdr->p_vaddr = grub_host_to_target32 (target_addr);
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phdr->p_paddr = grub_host_to_target32 (target_addr);
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phdr->p_align = grub_host_to_target32 (GRUB_KERNEL_MACHINE_LINK_ALIGN);
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ehdr->e_flags = grub_host_to_target32 (0x1000 | EF_MIPS_NOREORDER
|
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| EF_MIPS_PIC | EF_MIPS_CPIC);
|
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phdr->p_filesz = grub_host_to_target32 (core_size);
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phdr->p_memsz = grub_host_to_target32 (core_size);
|
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free (core_img);
|
||
core_img = elf_img;
|
||
core_size = program_size + sizeof (*ehdr) + sizeof (*phdr);
|
||
}
|
||
else
|
||
{
|
||
char *rom_img;
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size_t rom_size;
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char *boot_path, *boot_img;
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size_t boot_size;
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boot_path = grub_util_get_path (dir, "fwstart.img");
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boot_size = grub_util_get_image_size (boot_path);
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boot_img = grub_util_read_image (boot_path);
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rom_size = core_size + boot_size;
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||
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rom_img = xmalloc (rom_size);
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||
memset (rom_img, 0, rom_size);
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memcpy (rom_img, boot_img, boot_size);
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||
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memcpy (rom_img + boot_size, core_img, core_size);
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free (core_img);
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core_img = rom_img;
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core_size = rom_size;
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}
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#endif
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||
|
||
grub_util_write_image (core_img, core_size, out);
|
||
free (kernel_img);
|
||
free (core_img);
|
||
free (kernel_path);
|
||
|
||
while (path_list)
|
||
{
|
||
next = path_list->next;
|
||
free ((void *) path_list->name);
|
||
free (path_list);
|
||
path_list = next;
|
||
}
|
||
}
|
||
|
||
|
||
|
||
static struct option options[] =
|
||
{
|
||
{"directory", required_argument, 0, 'd'},
|
||
{"prefix", required_argument, 0, 'p'},
|
||
{"memdisk", required_argument, 0, 'm'},
|
||
{"font", required_argument, 0, 'f'},
|
||
{"config", required_argument, 0, 'c'},
|
||
{"output", required_argument, 0, 'o'},
|
||
#ifdef GRUB_PLATFORM_IMAGE_DEFAULT
|
||
{"format", required_argument, 0, 'O'},
|
||
#endif
|
||
{"help", no_argument, 0, 'h'},
|
||
{"version", no_argument, 0, 'V'},
|
||
{"verbose", no_argument, 0, 'v'},
|
||
{0, 0, 0, 0}
|
||
};
|
||
|
||
static void
|
||
usage (int status)
|
||
{
|
||
if (status)
|
||
fprintf (stderr, _("Try `%s --help' for more information.\n"), program_name);
|
||
else
|
||
printf (_("\
|
||
Usage: %s [OPTION]... [MODULES]\n\
|
||
\n\
|
||
Make a bootable image of GRUB.\n\
|
||
\n\
|
||
-d, --directory=DIR use images and modules under DIR [default=%s]\n\
|
||
-p, --prefix=DIR set grub_prefix directory [default=%s]\n\
|
||
-m, --memdisk=FILE embed FILE as a memdisk image\n\
|
||
-f, --font=FILE embed FILE as a boot font\n\
|
||
-c, --config=FILE embed FILE as boot config\n\
|
||
-o, --output=FILE output a generated image to FILE [default=stdout]\n"
|
||
#ifdef GRUB_PLATFORM_IMAGE_DEFAULT
|
||
"\
|
||
-O, --format=FORMAT generate an image in format [default=%s]\n\
|
||
available formats: %s\n"
|
||
#endif
|
||
"\
|
||
-h, --help display this message and exit\n\
|
||
-V, --version print version information and exit\n\
|
||
-v, --verbose print verbose messages\n\
|
||
\n\
|
||
Report bugs to <%s>.\n\
|
||
"),
|
||
program_name, GRUB_LIBDIR, DEFAULT_DIRECTORY,
|
||
#ifdef GRUB_PLATFORM_IMAGE_DEFAULT
|
||
GRUB_PLATFORM_IMAGE_DEFAULT_FORMAT, GRUB_PLATFORM_IMAGE_FORMATS,
|
||
#endif
|
||
PACKAGE_BUGREPORT);
|
||
|
||
exit (status);
|
||
}
|
||
|
||
int
|
||
main (int argc, char *argv[])
|
||
{
|
||
char *output = NULL;
|
||
char *dir = NULL;
|
||
char *prefix = NULL;
|
||
char *memdisk = NULL;
|
||
char *font = NULL;
|
||
char *config = NULL;
|
||
FILE *fp = stdout;
|
||
#ifdef GRUB_PLATFORM_IMAGE_DEFAULT
|
||
grub_platform_image_format_t format = GRUB_PLATFORM_IMAGE_DEFAULT;
|
||
#endif
|
||
|
||
set_program_name (argv[0]);
|
||
|
||
grub_util_init_nls ();
|
||
|
||
while (1)
|
||
{
|
||
int c = getopt_long (argc, argv, "d:p:m:c:o:O:f:hVv", options, 0);
|
||
|
||
if (c == -1)
|
||
break;
|
||
else
|
||
switch (c)
|
||
{
|
||
case 'o':
|
||
if (output)
|
||
free (output);
|
||
|
||
output = xstrdup (optarg);
|
||
break;
|
||
|
||
#ifdef GRUB_PLATFORM_IMAGE_DEFAULT
|
||
case 'O':
|
||
#ifdef GRUB_PLATFORM_IMAGE_RAW
|
||
if (strcmp (optarg, "raw") == 0)
|
||
format = GRUB_PLATFORM_IMAGE_RAW;
|
||
else
|
||
#endif
|
||
#ifdef GRUB_PLATFORM_IMAGE_ELF
|
||
if (strcmp (optarg, "elf") == 0)
|
||
format = GRUB_PLATFORM_IMAGE_ELF;
|
||
else
|
||
#endif
|
||
usage (1);
|
||
break;
|
||
#endif
|
||
|
||
case 'd':
|
||
if (dir)
|
||
free (dir);
|
||
|
||
dir = xstrdup (optarg);
|
||
break;
|
||
|
||
case 'm':
|
||
if (memdisk)
|
||
free (memdisk);
|
||
|
||
memdisk = xstrdup (optarg);
|
||
|
||
if (prefix)
|
||
free (prefix);
|
||
|
||
prefix = xstrdup ("(memdisk)/boot/grub");
|
||
break;
|
||
|
||
case 'f':
|
||
if (font)
|
||
free (font);
|
||
|
||
font = xstrdup (optarg);
|
||
break;
|
||
|
||
case 'c':
|
||
if (config)
|
||
free (config);
|
||
|
||
config = xstrdup (optarg);
|
||
break;
|
||
|
||
case 'h':
|
||
usage (0);
|
||
break;
|
||
|
||
case 'p':
|
||
if (prefix)
|
||
free (prefix);
|
||
|
||
prefix = xstrdup (optarg);
|
||
break;
|
||
|
||
case 'V':
|
||
printf ("grub-mkimage (%s) %s\n", PACKAGE_NAME, PACKAGE_VERSION);
|
||
return 0;
|
||
|
||
case 'v':
|
||
verbosity++;
|
||
break;
|
||
|
||
default:
|
||
usage (1);
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (output)
|
||
{
|
||
fp = fopen (output, "wb");
|
||
if (! fp)
|
||
grub_util_error (_("cannot open %s"), output);
|
||
free (output);
|
||
}
|
||
|
||
generate_image (dir ? : GRUB_LIBDIR, prefix ? : DEFAULT_DIRECTORY, fp,
|
||
argv + optind, memdisk, font, config,
|
||
#ifdef GRUB_PLATFORM_IMAGE_DEFAULT
|
||
format
|
||
#else
|
||
0
|
||
#endif
|
||
);
|
||
|
||
fclose (fp);
|
||
|
||
if (dir)
|
||
free (dir);
|
||
|
||
return 0;
|
||
}
|